obama and romney will watch the returns come in from their respective home bases, chicago and boston. obama arrived in his hometown early in the morning with the first lady. the latest polls suggest the president and his republican rival remain locked in a dead heat. obama spent the final campaign day visiting three swing states including ohio. he criticized romney's economic policies, saying they would expand the wealth gap. romney also visited ohio along with three other battleground states. he said obama's work to fix the economy has ended in failure. >>> romney and obama spent a lot of their time during this campaign arguing about the economy, but they also sold voters on their foreign policy plans. they talked tough on china. however, they didn't flesh out their approach for dealing with the world's second largest economy. nhk world's susumu kojima went to find some answers. >> reporter: president barack obama was elected four years ago. he promised a change from his predecessor, george w. bush. he has taken an approach to foreign policy. >> we were able to refocus our attention